IPv6 BGP Next hop problem

Hi,

With one peer I’m getting this martain next hop.

Even I use:

chain=ipv6-netassist-in bgp-communities=“” invert-match=no action=accept set-in-nexthop-ipv6=2a01:d0:ffff:915::1 set-bgp-prepend-path=“” append-bgp-communities=56662:29632


Feb 20 21:42:45 router route,bgp,debug,packet UPDATE Message
Feb 20 21:42:45 router route,bgp,debug,packet     RemoteAddress=2a01:d0:ffff:915::1
Feb 20 21:42:45 router route,bgp,debug,packet     MessageLength=103
Feb 20 21:42:45 router route,bgp,debug,packet,raw Received UPDATE packet
Feb 20 21:42:45 router route,bgp,debug,packet,raw     RemoteAddress=2a01:d0:ffff:915::1
Feb 20 21:42:45 router route,bgp,debug,packet,raw     Length=103
Feb 20 21:42:45 router route,bgp,debug,packet,raw     FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
Feb 20 21:42:45 router route,bgp,debug,packet,raw     00 67 02 00 00 00 50 40 01 01 00 50 02 00 1A 02
Feb 20 21:42:45 router route,bgp,debug,packet,raw     06 00 00 73 C0 00 00 23 2A 00 00 33 85 00 00 63
Feb 20 21:42:45 router route,bgp,debug,packet,raw     81 00 00 63 81 00 00 31 EE C0 08 0C 23 2A 23 2A
Feb 20 21:42:45 router route,bgp,debug,packet,raw     23 2A FC 9D 73 C0 FF 82 80 0E 1C 00 02 01 10 00
Feb 20 21:42:45 router route,bgp,debug,packet,raw     00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Feb 20 21:42:45 router route,bgp,debug,packet,raw     2F 2A 01 00 58 00 20
Feb 20 21:42:45 router route,bgp,debug,packet
Feb 20 21:42:45 router route,bgp,debug,packet     PathAttributes
Feb 20 21:42:45 router route,bgp,debug,packet         bgp-origin=IGP
Feb 20 21:42:45 router route,bgp,debug,packet         bgp-as-path=29632,9002,13189,25473,25473,12782
Feb 20 21:42:45 router route,bgp,debug,packet         bgp-as-path-len=6
Feb 20 21:42:45 router route,bgp,debug,packet         bgp-communities={9002:9002, 9002:64669, 29632:65410}
Feb 20 21:42:45 router route,bgp,debug,packet Martian global next hop: unspecied address ::
Feb 20 21:42:45 router route,bgp,debug,packet
Feb 20 21:42:45 router route,bgp,debug,packet     NLRI=2a01:58:20::/47
Feb 20 21:42:45 router route,bgp,debug,packet     invalid NEXTHOP, ignoring NLRI
Feb 20 21:42:45 router route,bgp,debug,packet
Feb 20 21:42:45 router route,bgp,debug,packet     WithdrawnRoutes=2a01:58:20::/47

Is there a bug?

Regards,